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The stuff about blowing the transformers is exactly what I've heard too. If there are any EE who'd care to comment, I'd be curious to know if the level of power that starts flowing through HV cables could damage or destroy them. As I've not heard this I assume not (one bit of good news) but I'd like to know.

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The problem is not directly with the wires, its the addition of the quasi-DC induced currents in an AC transformer. Even the addition of a small DC current can lead to unwanted harmonics or in extreme cases spot heating (this is what you think of when people say 'knocking out a transformer').

If you want a very in-depth review: https://doi.org/10.1002/2016SW001501

Well over my head but printed it out and will read anyway. Thank you.

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